src/gtk1/colour.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        colour.cpp
// Purpose:
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////


#ifdef __GNUG__
#pragma implementation "colour.h"
#endif

#include "wx/gdicmn.h"

#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <gdk/gdkprivate.h>

//-----------------------------------------------------------------------------
// wxColour
//-----------------------------------------------------------------------------

class wxColourRefData: public wxObjectRefData
{
public:
    wxColourRefData()
    {
        m_color.red = 0;
        m_color.green = 0;
        m_color.blue = 0;
        m_color.pixel = 0;
        m_colormap = (GdkColormap *) NULL;
        m_hasPixel = FALSE;
    }

    wxColourRefData(const wxColourRefData& data)
    {
        m_color = data.m_color;
        m_colormap = data.m_colormap;
        m_hasPixel = data.m_hasPixel;
    }

    ~wxColourRefData()
    {
        FreeColour();
    }

    bool operator == (const wxColourRefData& data) const
    {
        return (m_colormap == data.m_colormap &&
                m_hasPixel == data.m_hasPixel &&
                m_color.red == data.m_color.red &&
                m_color.green == data.m_color.green &&
                m_color.blue == data.m_color.blue &&
                m_color.pixel == data.m_color.pixel);
    }

    void FreeColour();
    void AllocColour( GdkColormap* cmap );

    GdkColor     m_color;
    GdkColormap *m_colormap;
    bool         m_hasPixel;

    friend class wxColour;

    // reference counter for systems with <= 8-Bit display
    static gushort colMapAllocCounter[ 256 ];
};

gushort wxColourRefData::colMapAllocCounter[ 256 ] =
{
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};

void wxColourRefData::FreeColour()
{
    if (m_colormap)
    {
#ifdef __WXGTK20__
        if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
            (m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
#else
        GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) m_colormap;
        if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
            (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
#endif
        {
            int idx = m_color.pixel;
            colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;

            if (colMapAllocCounter[ idx ] == 0)
            gdk_colormap_free_colors( m_colormap, &m_color, 1 );
        }
    }
}

void wxColourRefData::AllocColour( GdkColormap *cmap )
{
    if (m_hasPixel && (m_colormap == cmap))
        return;

    FreeColour();

#ifdef __WXGTK20__
    if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
	(m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
#else
    GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap;
    if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) ||
        (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
#endif
    {
        m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
        int idx = m_color.pixel;
        colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
    }
    else
    {
        m_hasPixel = gdk_color_alloc( cmap, &m_color );
    }
    m_colormap = cmap;
}

//-----------------------------------------------------------------------------

#define M_COLDATA ((wxColourRefData *)m_refData)

#define SHIFT (8*(sizeof(short int)-sizeof(char)))

IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)

wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
{
    m_refData = new wxColourRefData();
    M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
    M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
    M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
    M_COLDATA->m_color.pixel = 0;
}

void wxColour::InitFromName( const wxString &colourName )
{
    wxNode *node = (wxNode *) NULL;
    if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) )
    {
        wxColour *col = (wxColour*)node->Data();
        UnRef();
        if (col) Ref( *col );
    }
    else
    {
        m_refData = new wxColourRefData();

        if (!gdk_color_parse( colourName.mb_str(), &M_COLDATA->m_color ))
        {
            // VZ: asserts are good in general but this one is triggered by
            //     calling wxColourDatabase::FindColour() with an
            //     unrecognized colour name and this can't be avoided from the
            //     user code, so don't give it here
            //
            //     a better solution would be to changed code in FindColour()

            //wxFAIL_MSG( wxT("wxColour: couldn't find colour") );

            delete m_refData;
            m_refData = (wxObjectRefData *) NULL;
        }
    }
}

wxColour::~wxColour()
{
}

bool wxColour::operator == ( const wxColour& col ) const
{
    if (m_refData == col.m_refData) return TRUE;

    if (!m_refData || !col.m_refData) return FALSE;

    GdkColor *own = &(((wxColourRefData*)m_refData)->m_color);
    GdkColor *other = &(((wxColourRefData*)col.m_refData)->m_color);
    if (own->red != other->red) return FALSE;
    if (own->blue != other->blue) return FALSE;
    if (own->green != other->green) return FALSE;

    return TRUE;
}

wxObjectRefData *wxColour::CreateRefData() const
{
    return new wxColourRefData;
}

wxObjectRefData *wxColour::CloneRefData(const wxObjectRefData *data) const
{
    return new wxColourRefData(*(wxColourRefData *)data);
}

void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
{
    AllocExclusive();

    m_refData = new wxColourRefData();
    M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
    M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
    M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
    M_COLDATA->m_color.pixel = 0;
}

unsigned char wxColour::Red() const
{
    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );

    return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
}

unsigned char wxColour::Green() const
{
    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );

    return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
}

unsigned char wxColour::Blue() const
{
    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );

    return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
}

void wxColour::CalcPixel( GdkColormap *cmap )
{
    if (!Ok()) return;

    M_COLDATA->AllocColour( cmap );
}

int wxColour::GetPixel() const
{
    wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );

    return M_COLDATA->m_color.pixel;
}

GdkColor *wxColour::GetColor() const
{
    wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") );

    return &M_COLDATA->m_color;
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: colour.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10
	11	#ifdef __GNUG__
	12	#pragma implementation "colour.h"
	13	#endif
	14
	15	#include "wx/gdicmn.h"
	16
	17	#include <gdk/gdk.h>
	18	#include <gdk/gdkx.h>
	19	#include <gdk/gdkprivate.h>
	20
	21	//-----------------------------------------------------------------------------
	22	// wxColour
	23	//-----------------------------------------------------------------------------
	24
	25	class wxColourRefData: public wxObjectRefData
	26	{
	27	public:
	28	wxColourRefData()
	29	{
	30	m_color.red = 0;
	31	m_color.green = 0;
	32	m_color.blue = 0;
	33	m_color.pixel = 0;
	34	m_colormap = (GdkColormap *) NULL;
	35	m_hasPixel = FALSE;
	36	}
	37
	38	wxColourRefData(const wxColourRefData& data)
	39	{
	40	m_color = data.m_color;
	41	m_colormap = data.m_colormap;
	42	m_hasPixel = data.m_hasPixel;
	43	}
	44
	45	~wxColourRefData()
	46	{
	47	FreeColour();
	48	}
	49
	50	bool operator == (const wxColourRefData& data) const
	51	{
	52	return (m_colormap == data.m_colormap &&
	53	m_hasPixel == data.m_hasPixel &&
	54	m_color.red == data.m_color.red &&
	55	m_color.green == data.m_color.green &&
	56	m_color.blue == data.m_color.blue &&
	57	m_color.pixel == data.m_color.pixel);
	58	}
	59
	60	void FreeColour();
	61	void AllocColour( GdkColormap* cmap );
	62
	63	GdkColor m_color;
	64	GdkColormap *m_colormap;
	65	bool m_hasPixel;
	66
	67	friend class wxColour;
	68
	69	// reference counter for systems with <= 8-Bit display
	70	static gushort colMapAllocCounter[ 256 ];
	71	};
	72
	73	gushort wxColourRefData::colMapAllocCounter[ 256 ] =
	74	{
	75	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	76	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	77	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	78	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	79	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	80	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	81	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	82	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	83	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	84	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	85	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	86	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	87	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	88	};
	89
	90	void wxColourRefData::FreeColour()
	91	{
	92	if (m_colormap)
	93	{
	94	#ifdef __WXGTK20__
	95	if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	96	(m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	97	#else
	98	GdkColormapPrivate private_colormap = (GdkColormapPrivate) m_colormap;
	99	if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	100	(private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	101	#endif
	102	{
	103	int idx = m_color.pixel;
	104	colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1;
	105
	106	if (colMapAllocCounter[ idx ] == 0)
	107	gdk_colormap_free_colors( m_colormap, &m_color, 1 );
	108	}
	109	}
	110	}
	111
	112	void wxColourRefData::AllocColour( GdkColormap *cmap )
	113	{
	114	if (m_hasPixel && (m_colormap == cmap))
	115	return;
	116
	117	FreeColour();
	118
	119	#ifdef __WXGTK20__
	120	if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	121	(m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	122	#else
	123	GdkColormapPrivate private_colormap = (GdkColormapPrivate) cmap;
	124	if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) \|\|
	125	(private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR))
	126	#endif
	127	{
	128	m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE );
	129	int idx = m_color.pixel;
	130	colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1;
	131	}
	132	else
	133	{
	134	m_hasPixel = gdk_color_alloc( cmap, &m_color );
	135	}
	136	m_colormap = cmap;
	137	}
	138
	139	//-----------------------------------------------------------------------------
	140
	141	#define M_COLDATA ((wxColourRefData *)m_refData)
	142
	143	#define SHIFT (8*(sizeof(short int)-sizeof(char)))
	144
	145	IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject)
	146
	147	wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue )
	148	{
	149	m_refData = new wxColourRefData();
	150	M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
	151	M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
	152	M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
	153	M_COLDATA->m_color.pixel = 0;
	154	}
	155
	156	void wxColour::InitFromName( const wxString &colourName )
	157	{
	158	wxNode node = (wxNode ) NULL;
	159	if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) )
	160	{
	161	wxColour col = (wxColour)node->Data();
	162	UnRef();
	163	if (col) Ref( *col );
	164	}
	165	else
	166	{
	167	m_refData = new wxColourRefData();
	168
	169	if (!gdk_color_parse( colourName.mb_str(), &M_COLDATA->m_color ))
	170	{
	171	// VZ: asserts are good in general but this one is triggered by
	172	// calling wxColourDatabase::FindColour() with an
	173	// unrecognized colour name and this can't be avoided from the
	174	// user code, so don't give it here
	175	//
	176	// a better solution would be to changed code in FindColour()
	177
	178	//wxFAIL_MSG( wxT("wxColour: couldn't find colour") );
	179
	180	delete m_refData;
	181	m_refData = (wxObjectRefData *) NULL;
	182	}
	183	}
	184	}
	185
	186	wxColour::~wxColour()
	187	{
	188	}
	189
	190	bool wxColour::operator == ( const wxColour& col ) const
	191	{
	192	if (m_refData == col.m_refData) return TRUE;
	193
	194	if (!m_refData \|\| !col.m_refData) return FALSE;
	195
	196	GdkColor own = &(((wxColourRefData)m_refData)->m_color);
	197	GdkColor other = &(((wxColourRefData)col.m_refData)->m_color);
	198	if (own->red != other->red) return FALSE;
	199	if (own->blue != other->blue) return FALSE;
	200	if (own->green != other->green) return FALSE;
	201
	202	return TRUE;
	203	}
	204
	205	wxObjectRefData *wxColour::CreateRefData() const
	206	{
	207	return new wxColourRefData;
	208	}
	209
	210	wxObjectRefData wxColour::CloneRefData(const wxObjectRefData data) const
	211	{
	212	return new wxColourRefData((wxColourRefData )data);
	213	}
	214
	215	void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue )
	216	{
	217	AllocExclusive();
	218
	219	m_refData = new wxColourRefData();
	220	M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT;
	221	M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT;
	222	M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT;
	223	M_COLDATA->m_color.pixel = 0;
	224	}
	225
	226	unsigned char wxColour::Red() const
	227	{
	228	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	229
	230	return (unsigned char)(M_COLDATA->m_color.red >> SHIFT);
	231	}
	232
	233	unsigned char wxColour::Green() const
	234	{
	235	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	236
	237	return (unsigned char)(M_COLDATA->m_color.green >> SHIFT);
	238	}
	239
	240	unsigned char wxColour::Blue() const
	241	{
	242	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	243
	244	return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT);
	245	}
	246
	247	void wxColour::CalcPixel( GdkColormap *cmap )
	248	{
	249	if (!Ok()) return;
	250
	251	M_COLDATA->AllocColour( cmap );
	252	}
	253
	254	int wxColour::GetPixel() const
	255	{
	256	wxCHECK_MSG( Ok(), 0, wxT("invalid colour") );
	257
	258	return M_COLDATA->m_color.pixel;
	259	}
	260
	261	GdkColor *wxColour::GetColor() const
	262	{
	263	wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") );
	264
	265	return &M_COLDATA->m_color;
	266	}
	267
	268